Are you certain about that? In mine, the outboard HID lights are dual high and low beams, and the inboard halogens are strictly daytime running lights and for flashing high when passing. If you have it parked in a garage where it's dim, and turn the lights on auto, the HIDs will be on low and if you push the control stalk forward they will change to high. If you have the truck outside in the light, the halogens will come on instead of the HIDs, and if you pull back on the stalk the halogens will flash high for passing. I'm just wondering if it's done differently over where you are?

In any case, if you change the halogen bulb to something like an Osram Silverstar, you will get a brighter light that is close to matching the color of the HIDs due to the Xenon gas in the bulb. http://www.autobulbsdirect.co.uk/pro...cat=253&page=1

If you want to change the halogens to HID, then you'll need to get a kit to convert them, which I believe means you might need to dismantle your lamps to accomodate the different style of bulb in addition to installing the necessary electronics unless there's such a thing as an HID bulb designed to fit an H1 plug (normally they're different, but there might be retrofit HID bulbs that fit that I'm not aware of - I'm not an expert in the retrofit department ). Last time I checked, the HID replacement bulbs for factory installed HIDs run around $125 U.S. each, plus the cost of the electronics to run them.